<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片区域 -->
        <el-card>
            <!-- 添加角色按钮区域 -->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="rolesDialogVisible=true">添加角色</el-button>
                </el-col>
            </el-row>

            <!-- 角色列表区域 -->
             <el-table :data="rolelist" border stripe>
                 <!-- 展开列 -->
                 <el-table-column type="expand">
                     <template slot-scope="scope">
                         <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                             <!-- 渲染一级权限 -->
                             <el-col :span="5">
                                 <el-tag closable @close="removeRightById(scope.row ,item1.id)">{{item1.authName}}</el-tag>
                                 <i class="el-icon-caret-right"></i>
                             </el-col>
                             <!-- 渲染二级,三级权限 -->
                             <el-col :span="19">
                                 <el-row :class="[i2 === 0?'':'bdtop','vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                                     <el-col :span="6">
                                         <el-tag type="success" closable @close="removeRightById(scope.row ,item2.id)">{{item2.authName}}</el-tag>
                                         <i class="el-icon-caret-right"></i>
                                     </el-col>
                                     <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row ,item3.id)">
                                             {{item3.authName}}
                                        </el-tag>
                                     </el-col>
                                 </el-row>
                             </el-col>
                         </el-row>
                        <!-- <pre>
                            {{scope.row}}
                        </pre> -->
                    </template>
                 </el-table-column>
                 <!-- 索引列 -->
                <el-table-column label="#" type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit" @click="showSetRightDialog(scope.row.id)">编辑</el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeSetRightDialog(scope.row.id)">删除</el-button>
                        <el-button size="mini" type="warning" icon="el-icon-setting" @click="AshowSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>

        <!-- 添加角色对话框 -->
        <el-dialog
          title="添加角色"
          :visible.sync="rolesDialogVisible"
          width="30%"
          @close="rolesDialogClosed"
          >
          <!-- 内容主题区 -->
          <el-form :model="rolesForm" :rules="rolesFormRules" ref="rolesFormRef" label-width="70px">
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="rolesForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
              <el-input v-model="rolesForm.roleDesc"></el-input>
            </el-form-item>
          </el-form>
          <!-- 底部区域 -->
          <span slot="footer" class="dialog-footer">
            <el-button @click="rolesDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="rolesUser">确 定</el-button>
          </span>
        </el-dialog>

        <!-- 分配权限对话框 -->
        <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
            <!-- 树形控件 -->
            <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
              <el-button @click="setRightDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 编辑角色的对话框 -->
    <el-dialog title="编辑角色" :visible.sync="bianjiDialogVisible" width="50%" @close="bianjiDialogClosed">
      <el-form :model="bianjiForm" :rules="bianjiFormRules" ref="bianjiFormRef" label-width="70px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="bianjiForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="bianjiForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="bianjiDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="bianjiUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        return {
            //所有角色列表数据
            rolelist: [],
            //控制添加角色对话框的显示与隐藏
            rolesDialogVisible:false,
             //添加用户数据表单
            rolesForm: {
                roleName:'',
                roleDesc:''
            },
            //添加角色的验证规则对象
            rolesFormRules : {
                roleName: [
                    {required: true,message:'请输入角色名称',trigger:'blur'},
                    { min: 2, max: 10, message: '字数长度在 2 到 5 个字符', trigger: 'blur' } 
                ],
                roleDesc: [
                    {required: true,message:'请输入角色描述',trigger:'blur'},
                    { min: 3, max: 15, message: '字数长度在 3 到 15 个字符', trigger: 'blur' } 
                ]
            },
            //控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            //所有权限的数据
            rightslist: [],
            //树形控件的属性绑定对象
            treeProps: {
                label:'authName',
                children: 'children'
            },
            //默认选定的节点ID值数组
            defKeys: [],
            //当前即将分配角色的ID
            roleId: '',
            // 编辑角色对话框的显示与隐藏
            bianjiDialogVisible: false,
            // 查询到的角色信息对象
            bianjiForm: {
            },
            // 修改添加角色的验证规则对象
            bianjiFormRules: {
              roleName: [
                    {required: true,message:'请输入角色名称',trigger:'blur'},
                    { min: 2, max: 10, message: '字数长度在 2 到 5 个字符', trigger: 'blur' } 
                ],
                roleDesc: [
                    {required: true,message:'请输入角色描述',trigger:'blur'},
                    { min: 3, max: 15, message: '字数长度在 3 到 15 个字符', trigger: 'blur' } 
                ]
            }
        }
    },
    created(){
        this.getRolesList()
    },
    methods: {
        //获取所有角色列表
        async getRolesList() {
            const {data: res} = await this.$http.get('roles')

            if (res.meta.status !==200) {
                return this.$message.error('获取角色列表失败')
            }

            this.rolelist = res.data

            console.log(this.rolelist);
        },

        //监听添加用户对话框的关闭事件
        rolesDialogClosed() {
            this.$refs.rolesFormRef.resetFields()
        },
        //点击按钮，添加新角色
        rolesUser() {
            this.$refs.rolesFormRef.validate(async valid => {
            if (!valid) return
            // 可以发起添加角色的网络请求
            const { data: res } = await this.$http.post('roles', this.rolesForm)
            if (res.meta.status !== 201) {
            this.$message.error('添加角色失败！')
            }
            this.$message.success('添加角色成功！')
            // 隐藏添加角色的对话框
            this.rolesDialogVisible = false
            // 重新获取角色列表数据
            this.getRolesList()
          })
        },
        //根据ID删除对应的权限
        async removeRightById(role, rightId) {
              //弹框提示用户是否删除
             const confirmResult =await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }
            ).catch(err => err)

            if(confirmResult !=='confirm') {
            return this.$message.info('取消了删除')
            }

            const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`)

            if(res.meta.status !== 200) {
            return this.$message.error('删除权限失败了！')
            }

            // this.getRolesList()
            role.children = res.data
        },
        //展示分配权限的对话框
        async AshowSetRightDialog(role) {
            this.roleId = role.id
            //获取所以权限数据
            const {data: res} =await this.$http.get('rights/tree')

            if(res.meta.status !==200) {
                return this.$message.error('获取数据权限失败')
            }

            //把获取到的权限数据保存到 data 中
            this.rightslist = res.data
            console.log(this.rightslist);

            //递归获取三级节点的ID
            this.getLeafKeys(role,this.defKeys)

            this.setRightDialogVisible = true
        },
        //通过递归的形式，获取角色下所有的三级权限ID，并保存到 defKeys 数组中
        getLeafKeys(node,arr) {
            //如果当前node节点不包含children属性，则是三级节点
            if(!node.children) {
                return arr.push(node.id)
            }

            node.children.forEach(item =>this.getLeafKeys(item,arr))
        },
        //监听分配权限对话框的关闭事件
        setRightDialogClosed() {
            this.defKeys= []
        },
        //点击为角色分配权限
        async allotRights() {
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]

            const idStr = keys.join(',')

              const {data: res} =await this.$http.post(`roles/${this.roleId}/rights`,{ rids: idStr})

              if(res.meta.status !==200) {
                  return this.$message.error('分配权限失败！')
              }

              this.$message.success('分配权限成功！')
              this.getRolesList()
              this.setRightDialogVisible = false
        },

        // 监听修改角色对话框的关闭事件
        bianjiDialogClosed() {
          this.$refs.bianjiFormRef.resetFields()
        },
        // 修改角色信息并提交
        bianjiUserInfo() {
          this.$refs.bianjiFormRef.validate(async valid => {
            if (!valid) return
            // 发起修改用户信息的数据请求
            const { data: res } = await this.$http.put(
              'roles/' + this.bianjiForm.roleId,
              {
                roleName: this.bianjiForm.roleName,
                roleDesc: this.bianjiForm.roleDesc
              }
            )
            console.log(res);
            if (res.meta.status !== 200) {
              return this.$message.error('更新用户信息失败！')
            }

                // 关闭对话框
            this. bianjiDialogVisible = false
            // 刷新数据列表
            this.getRolesList()
            // 提示修改成功
            this.$message.success('更新用户信息成功！')
          })
        },

        // 展示编辑角色的对话框
        async showSetRightDialog(id) {
          // console.log(id)
        const { data: res } = await this.$http.get('roles/' + id  )

        if (res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败！')
        }

        this.bianjiForm = res.data
        this.bianjiDialogVisible = true
        },


        // 根据Id删除对应的角色信息
        async removeSetRightDialog(id) {
            // 弹框询问用户是否删除数据
             const confirmResult = await this.$confirm(
            '此操作将永久删除该用户, 是否继续?',
            '提示',
            {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
            }
            ).catch(err => err)

            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            // console.log(confirmResult)
            if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
            }

            const { data: res } = await this.$http.delete('roles/' + id)

            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败！')
            }

            this.$message.success('删除用户成功！')
            this.getRolesList()
        },
    }
}
</script>



<style lang="less" scoped>
.el-tag{
    margin: 7px;
}

.bdtop {
    border-top: 1px solid #eee;
}

.bdbottom {
    border-bottom: 1px solid #eee;
}

.vcenter {
    display: flex;
    align-items: center;
}
</style>